Abstract

The present invention relates to a system for searching for and blocking a short-circuited channel for a premises broadcasting apparatus and a method therefor, the system being capable of, when at least one loudspeaker line is short-circuited in a premises broadcasting system comprising loudspeakers divided into a plurality of groups in one amplifier, simply and quickly searching for the short-circuited loudspeaker line without sequentially searching for short-circuited channels.

IPC Classes  ?

• H04H 20/12 - Arrangements for monitoring, testing or troubleshooting
• H04H 20/61 - Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
• G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults

Abstract

A method and a device for analyzing and processing an abnormal load on a premises broadcasting device are provided. More particularly, a method for analyzing and processing an abnormal load on a loudspeaker including a distribution line connected to an output of an amplifier for the premises broadcasting device is provided. The method includes the steps of: comparing and analyzing a real-time individual load value with an individual load value at the early stage of abnormality analysis for an individual loudspeaker load; and electrically separating only the loudspeaker load, including the distribution line corresponding to a short, from the output of the amplifier for the premises broadcasting device in the comparison and analysis step.

IPC Classes  ?

• H03G 11/00 - Limiting amplitudeLimiting rate of change of amplitude
• H04R 29/00 - Monitoring arrangementsTesting arrangements
• H04R 3/00 - Circuits for transducers

Abstract

The present invention relates to a method and device for analyzing and processing an abnormal load on a premises broadcasting device. A method of analyzing and processing an abnormal load on a loudspeaker including a distribution line connected to an output of an amplifier for the premises broadcasting device includes the steps of: comparing a real-time individual load value with an individual load value at the early stage of abnormality analysis for an individual loudspeaker load; and electrically separating only the loudspeaker load, including the distribution line corresponding to a short, from the output of the amplifier for the premises broadcasting device in the comparison step. (The individual load value at the early stage is specified as an early 2 tied value, and the early 2 tied value is obtained by dividing an early load voltage value by an early load current value; and the real-time individual load value is specified as a real-time 2 tied value, and the real-time 2 tied value is obtained by dividing a real-time load voltage value by a real-time load current value.) According to the present invention, since it is possible to electrically separate, mark or treat only abnormal loads from an output amplifier for the premises broadcasting device even if any individual loads from among a plurality of premises broadcasting device loads including the distribution line are abnormal, it is possible to prevent general broadcasting and emergency evacuation broadcasting from having to stop transmissions to the loudspeakers of houses that accommodate normal loads, prevent inconvenience to the public, and meet emergency broadcast facility fire security standards. Furthermore, it is also possible to reduce waste in the form of output amplifiers and prevent amplifiers from becoming damaged when premises broadcasting devices are installed.

IPC Classes  ?

• H04H 20/61 - Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast